Posting for a mate.
He's just pulled up fault codes...
01044 first control module incorrectly coded intermittent
00656 seat occupied passenger side intermittent
Has anyone had this? There's not much on Google search really. Found mention of Sensor G128 which appears to be a pad in the seat upright somewhere that can come unstuck and fall off??
He knows about the connector under the seat (had that problem before) and that's fine.